Area Burned-Acres 
Apr. 15,1925 
Use of Liability Ratings in Forest Fire Protection 
707 
Yellow pine and Sugar pine (669firea) 
X Red and White fir (97fires) 
i Alpine (included Sierras), (I5fires) 
© Douglas fir (270fires) 
X Brush (346 fires) 
HGrass and Digger pine.- 
Oak (included Sierras),(129 fires) 
Fig. 8 —Southwestern Oregon and Northwestern 
California (Region 6): Relation of size of fire to time 
elapsed between discovery and attack 
